Welding robots for spot welding

Details Welding robots for spot welding Welding robots for spot welding

2005-02-08

2005-02-08

Shaw, Clifford C. (Department: 1725)

Electric heating

Metal heating

For bonding with pressure

C901S042000

Reexamination Certificate

active

06852941

ABSTRACT:
A welding robot for spot welding is disclosed. The welding robot is capable of grinding electrode tips promptly and clearly. The welding robot1includes a servo gun5provided at a front end of a multi-joint arm2,in which a pair of electrode tips for the spot welding are installed, and a control unit3for controlling a servo motor6of the servo gun in a welding process or a grinding process of the electrode tips. A dresser18for grinding the pair of the electrode tips includes a servo motor27for rotating a grinding cutter30.The control unit3controls the servo motor27of the dresser and controls the servo motor6of the servo gun in order to adjust a pressure of the pair of the electrode tips installed in the servo gun with respect to the cutter. In a finishing grinding process of the electrode tips, the speed of revolution of the cutter is increased and the pressure applied to the cutter is reduced relative to the speed and pressure applied in a rough finishing process.

REFERENCES:
patent: 5445481 (1995-08-01), Nakajima et al.
patent: 5545872 (1996-08-01), Nakajima et al.

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